Nitāi: (reading) "There are five gross elements, namely earth, water, fire, air and ether. There are also five subtle elements: smell, taste, color, touch and sound. The senses for acquiring knowledge and the organs for action number ten, namely the auditory sense, the sense of taste, the tactile sense, the sense of sight, the sense of smell, the active organ for speaking, the active organs for working, those for traveling, generating and evacuating. The internal, subtle senses are experienced as having four aspects, in the shape of the mind, intelligence, ego and contaminated consciousness. Distinctions between them can be made only by different functions, since they represent different characteristics."
Prabhupāda: So this is the analysis of the whole bodily construction. And beyond this bodily construction there is the soul. And when you study the characteristic of the soul, that is called spiritual knowledge. So long you are engaged with the characteristics of the bodily different elements, that is material study. So generally, people they are interested the medical science. Medical science is also interested with this body. The physical science... The physical science interest will be bhūmir āpaḥ analo vāyuḥ, mahā-bhūtāni. And psychology, they are interested with the internal senses, mind: thinking, feeling, and willing.
So all this material scientific knowledge, they are simply interested with this body. But spiritual knowledge begins when you actually take seriously what Bhagavad-gītā says or Śrīmad-Bhāgavatam says or what the Vedas says. Vedas says everything, both the material and the spiritual. But for human being we are not only, we should not only be interested with the material science, but we should be interested... That is our main interest. Athāto brahma jijñāsā.